After bringing down a system by using vi on a huge logfile I've taken the habit of using less to view logfiles. Unfortunately I don't know of a less version that's useful on a window system, the 80 character limit of a console application makes the GNUWin version rather useless.
Trowser, the Trace browser offers a nice alternative to less. It runs under wish, the TCL window shell.
You can get trowser from http://www.nefkom.net/tomzo/prj/trowser/ . Extract the files, it's generally easier to use directories without spaces in the name so I use c:\apps as directory. I used the ActiveTCL to run it .
Usage: C:\temp>C:\Tcl\bin\wish85.exe c:\apps\trowser-1.3\trowser.tcl database.lg